Remember the PBS series special on the Roman Emperor, Claudius? The title, which captured the style of his governance, “I, Claudius.” It was a 13-part series on Masterpiece Theater. How many of you saw it? Let’s not always see the same hands. Well, almost all of you remember some of the history of the Roman Emperors. They ranged from mad and murderous, like Nero, to rational and effective, like Augustine. Hold that thought, and we’ll get to today’s subject. A good friend, Duncan Parham, is a man of eclectic interests. One of those is rare coins. Last weekend he showed...